Improvement in portable steam-apparatus for greenhouses



2 Sheets-Sheet 2. E. WHITELEY. y

Steam-l Apparatus for Green Houses.

No. 93,380. Patented Aug. 3, 1369.

N. PETKHS, Pham-Lilhngnpher. wash nnnnnnnn c,

' ttntell geteilte attaccata- Letters Patent No. 93,380, dated August 3, ISGS).

IMPROVEMENT IN PORTABLE STEAM-APPARATUS FOR G-RE'ENHOUSES.

The Schedule referred to in these Letters Patent and making pari; of the same'.

To all whom t't may concern:

Be it known that I, EDWARD WHITELEY, of Carnbridge, in the county .of Middlesex, and State of Massachusetts, have invented a Portable Apparatus for Heating Greenhouses, &c., of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in which- Fignre l is a perspective view ot' my portable heating-apparatus, with its easing removed.

Figure 2 is a perspectiveview of the casing.

Figure 3 is a vertical section through the centre o my portable heating-apparatus in place ywithin its casing. v

Figures 4 and 5, details to be referred to.

My invention has for its object to produce a compact, portable, convenient, and economical apparatus for heating greenhouses, &c.; and

My invention consists in a hot-water boiler, conaposed of a h ollowring or base, and a hollow'top or dome, connected by a series of' pipes, the boiler being arranged within a casing, and the water circulating through flow and return-pipes, connected with a suitable tank placed in any convenient position above the boiler; and

My invention also consists in a peculiar manner of hanging the ash-pit door, so that lit may be opened and closed by sliding it back and forth ina convenient and expeditious manner; and 'y My invention furthermore consists in certain details to be particularly described hereafter.

To enable others skilled in the art to understand and use my invention, l will proceed to describe the manner in which I have carried it out.

In the said draudngs- A is the base, of circular form, upon the horizontal flange a, near the top ot' which, rests the hot-water boiler B, the bottom ot' which tits snugly within a vertical flange, b, which thus insures a tight joint between the two surfaces.

The outer edge c, ofthe top of' the base, extends 'up above the horizontal flange q. to about the level of the top ofthe vertical flange b, andthe bottom ofl an outer casing, C, rests upon the horizontal flange a snugly up against the inner surface of this edge c, also forming a tight joint.

A portion of the casing G, near its bottom, is cut away, as shown at d, figs. 2 and 3, to admit of hanging, upon the top ofthe base A, the hooks 6 otan ash-pit door, E, which covers. over the opening Gr to the 'ashpit; and by thus hanging the door, it may be readily slid back and forth to open or close the opening Gr, this construction being exceedingly cheap and convenient.

Extending diametrically across the opening enclosed by the flange a, is a horizontal bar, c, to the centre of' which is pivoted a circular grate, H, from the front of which projects an arm, f, provided' with a 'socket for the reception of a shaking-bar, g, one end, 7, of which is bent round and provided with a cross-piece, h, iig. 4, by which construction,jvhen it is desired to inclinethe.

grate down-only sufficiently to allow of the escape of' the cliukers without dumping the grate, the end of the cross-piece is' inserted, and the long arm of 'the shaking-bar is turned to one side, until the lower'end 7 strikes against the side of the opening G, which thus serves as a stop to prevent the further turning of the grate. (See lig. 1.)

The hot-waterl boiler B consists of a hollow ring or base, i, and a hollow top or dome, j, connected together' by a series of pipes, 7:, arranged in two concentric rows, fig. 5, the ring 'i and the pipes It' enclosing the space which forms the fire-pot or receptacle for containing the fuel.

The pipes It of the outer row are provided with wings or flanges, l, on opposite sides, which may be made in one and the saine piece therewith, these flanges presenting an'extended heating-sultce, s )aces m being left between them for the escapo o the smoke and gases which pass up between the boiler Il and an inner smoke-easing, l, into a chamber, K, the bottom of the casing I resting upon a flange, n, p rojeeting out from the upper portion of the ring t, the outer edge ot' the tlauge being.. turned up so as to forni a tight joint.

o arc tlues or pipes, which pass through thehollow dou1ej,and also serve to conduct the smoke and gases from the fire-pot up into thc chamber K, from which they pass through an opening, 11, (in aplate, L, forming the top ot' the chamben)v to the slnoke-tlue.

At the top of the outer casing C is a ring, r, provided with a groove, s, for the reception of a tlange, t, extending down from the outer edge of the plate L, the groove s being filled with sand, toinsure a tight joint. M is a hopper, the lower end of which tits into an opening in the dome j, the upper end being opened or closed by alid or cover, q, hinged to the plate L, the hopper serving to conduct the fuel into the fire-pot beneath.

a is a circula-1 opening at the centre of the plate L,

to allow ofthe passage of a vertical flow-pipe, N,

proceeding from the interior of the .domcj, and corn- Inunicating through a series ot he'. ting-pipes arranged around the interior of the greenhouse or apartment withV atank, (not shown;) and from the interior of the ring t' proceeds a horizontal rcturupipe, O, also communicating with the tank, by which arrangement the water is caused to circulate through ,the pipes, tank, and boiler7 thus heating the apartment as desired.

t is a flange projecting up from the outer edge of the plate L, the opening u, through which the vertical pipe N, passes, bein'g also surrounded by a flange, 8,

projecting down and fitting within another flange, 9, rising from the top of the dome. The opening in the plate L, which communicates with the hopper M, is also provided with a ange, w, around which ts a corresponding Bange on the lower side of the cover q, and the top of this plate L is covered with a layer of sand, which preventsv the radiation of heat, and seals the joints' between the flanges 8 9 and w q, so as to prevent the escape of smoke or gas from the chamber K. l

By the employment of sandjoints, as above described, I am enabled to dispense with the use of bolts, thus facilitating the removal of the parts, and allowing of their expansion-and contraction.

This construction allows of the plate L and casings C I being readily removed to obtain access to the pipes la o of the boiler, which may thus be rapidly cleaned, which is particularly desirable where wood or bituminous coal is nsed,wl1icl1 operation is attended with Vconsiderable diiiculty in heating-apparatus as hereto-f4 fore constructed.

Also, the removabletop plate L, with its flanges t e, in combination-witl1 the casing G, provided with groove, s, substantially as set forth.

Also, the smoke-casing I, supported upon a ange,

fn', in combination with the boiler B and the top plate L, substantially as set forth.

Witnesses:

N. W. STEARNS, A. H. EVANS.

E. VVHITELEY. 

